Results for “common”
Small, practical examples. Search by task or narrow things down below.
Create independent rows in a matrix
TypeScript: Use a mapping function to create each row instead of sharing one array with fill.
TypeScript✓ Tested
Decode a percent-encoded URL component
TypeScript: decodeURIComponent reverses percent encoding and throws for malformed sequences.
TypeScript✓ Tested
Delegate iteration to another iterable
TypeScript: yield-star forwards items from another iterable while retaining generator composition.
TypeScript✓ Tested
Describe an object with an interface
Require named fields on a reusable object shape.
interface✓ Tested
Detect an invalid Date object
TypeScript: An invalid Date has a NaN time value.
TypeScript✓ Tested
Detect NaN without converting the input
TypeScript: Number.isNaN tests the special numeric value instead of applying string-to-number conversion.
TypeScript✓ Tested
Display a number with a fixed decimal width
TypeScript: toFixed returns a formatted string rather than a numeric value.
TypeScript✓ Tested
Distinguish an own property from an inherited one
TypeScript: Object.hasOwn avoids depending on an object’s possibly shadowed hasOwnProperty method.
TypeScript✓ Tested
Divide using a fractional number
TypeScript: Use a floating-point operand to preserve the fractional part of a division.
TypeScript✓ Tested
Drop the fractional part toward zero
TypeScript: Math.trunc differs from floor for negative inputs.
TypeScript✓ Tested
Explain a calculation with a comment
TypeScript: Keep the code executable while documenting why a fixed input is used.
TypeScript✓ Tested
Extract all regex matches with their groups
TypeScript: matchAll requires a global regular expression and returns an iterator of matches.
TypeScript✓ Tested